Nightmare/Passive

Okay so you play as Nightmare, leader of the bad sanses, you get the gist. long ago, you used to be a normal skeleton who lived with your brother, Dream. but one day you ate a black apple, and you became a goopy octopus. and Dream thought he'd lost the passive side of you for good. (Story) you wake up one day, back in your passive form. you don't know how you became like this, but you're now how you once were. (change the personality or not, idk) nobody in your team recognizes you, and you don't want them seeing you. (do a ship if you wanted, just no Dreammare. please)